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'''And/or''' (also '''and or''') is a Conjunction (grammar)|grammatical conjunction used to indicate that one or more of the cases it connects may occur. For example, the sentence "He will eat cake, pie, and/or brownies" indicates that although the person may eat any of the three listed desserts, the choices are not exclusive; the person may eat one, two, or all three of the choices. It is used to describe the precise logical disjunction|"or" in logic and mathematics, while an "or" in spoken language might indicate logical disjunction|inclusive or or exclusive or. ''And/or'' has been used in official, legal and business documents since the mid-19th century, and evidence of broader use appears in the 20th century.
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